<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div id="root">
      <button @click="$destroy()">destroy</button>
      <p v-show="isShow">沛华真帅~</p>
    </div>
    <script src="../js/vue.js"></script>
    <script>
      new Vue({
        el: "#root",
        data: {
          isShow: true,
        },
        mounted() {
          this.timeId = setInterval(() => {
            console.log(111);
            this.isShow = !this.isShow;
          }, 1000);
        },
        beforeDestroy() {
          clearInterval(this.timeId);
        },
      });
    </script>
  </body>
</html>
